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首页> 外文会议>International Symposium on Natural Draught Cooling Towers; 20040520-22; Istanbul(TR) >Efficient linear and non-linear dynamic analysis and design of RC cooling towers subjected to earthquake
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Efficient linear and non-linear dynamic analysis and design of RC cooling towers subjected to earthquake

机译：地震作用下钢筋混凝土冷却塔的有效线性和非线性动力分析与设计

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摘要

In this paper, a very efficient method for computation of structural response of RC shells of revolution such as natural draught cooling towers is presented using a finite ring element concept. The enhancement of a double curved ring element for consideration of realistic non-linear RC constitutive laws in combination with solution algorithms for dynamic problems is summarized. This shell ring element is implemented in the finite element program system ROSHE (Wittek et al. 2002) where a variety of very powerful analysis tools for computation of linear and non-linear structural response of RC shells of revolution subjected to transient dynamic loading are provided. Special applications of these elements are given within this contribution: Here, aspects of structural modeling are discussed using this special ring element method. Further, the dynamic behaviour and its consequences on the structural design of a modern natural draught cooling tower subjected to horizontal seismic ground acceleration are explained. The results obtained from different analysis methods - equivalent static acceleration method, response spectrum method and transient linear and non-linear dynamic analyses - are compared and discussed.
机译：在本文中，使用有限环元概念提出了一种非常有效的计算RC旋转壳体（例如自然通风冷却塔）结构响应的方法。总结了考虑实际非线性RC本构定律的双弯曲环单元的增强，并结合了动态问题的求解算法。该壳环单元在有限元程序系统ROSHE中实现（Wittek等，2002），该系统提供了多种非常强大的分析工具，用于计算承受瞬时动态载荷的RC旋转壳的线性和非线性结构响应。 。这些元素的特殊应用在此贡献内给出：在此，使用这种特殊的环形元素方法讨论结构建模的各个方面。此外，解释了动态行为及其对现代自然通风冷却塔在水平地震地面加速度作用下的结构设计的影响。比较并讨论了从不同分析方法（等效静态加速度方法，响应谱方法以及瞬态线性和非线性动态分析）获得的结果。

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